//part1:C05:ex5.9.cpp
#include <iostream>
int main(void) {
  using namespace std;
  unsigned int vowelCnt = 0;
  char ch;
  cout << "Enter some characters:\n";
  while (cin >> ch) {
    if (ch == 'a') {
      ++vowelCnt; 
    }
    if (ch == 'e') {
      ++vowelCnt;      
    }
    if (ch == 'i') {
      ++vowelCnt;      
    }
    if (ch == 'o') {
      ++vowelCnt; 
    }
    if (ch == 'u') {
      ++vowelCnt; 
    }
  }
  cout << "your characters has :" << vowelCnt << "vowel" << endl;

  return 0;
}
